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Influence of channel tortuosity on the lightning return stroke electromagnetic field in the time domain

文献类型:期刊论文

作者Zhao, Zhong-kuo1,2; Zhang, Qi-lin3
刊名ATMOSPHERIC RESEARCH
出版日期2009-02-01
卷号91期号:2-4页码:404-409
关键词Lightning channel tortuosity EM field Return strokes Retardation effect
ISSN号0169-8095
DOI10.1016/j.atmosres.2008.05.013
通讯作者Zhao, Zhong-kuo(zhk_xinpian@hotmail.com)
英文摘要The effect of lightning channel tortuosity on the associated electromagnetic (EM) fields in the time domain is investigated quantitatively from a new point of view. Due to the vanishing of geometric symmetry when taking into account the tortuosity of lightning channels, it is necessary to calculate the associated EM fields in the Cartesian coordinate system. An efficient technique is adopted to produce tortuous lightning channels and then the fractal dimension of the channel is calculated automatically by a program. The results show that at close distances. the dependence of EM fields on azimuth is significant, the ratio of MF peaks at two coaxial points with the channel base may reach about 4 and that of the EF may be larger than 2. With increased distance, the dependence of waveform on azimuth weakens. At distances of 10 km and 100 km, the current peaks derived from the EF peaks show good consistency with the current peak adopted, with an uncertainty less than 25%. (C) 2008 Elsevier B.V. All rights reserved.
收录类别SCI ; ISTP
WOS关键词RADIATION
WOS研究方向Meteorology & Atmospheric Sciences
WOS类目Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:000263193900035
出版者ELSEVIER SCIENCE INC
URI标识http://www.irgrid.ac.cn/handle/1471x/2556189
专题寒区旱区环境与工程研究所
通讯作者Zhao, Zhong-kuo
作者单位1.Chinese Acad Sci, Lab Middle Atmosphere & Global Environm Observat, Inst Atmospher Phys, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
3.Nanjing Univ Informat Sci & Technol, Coll Remote Sensing, Nanjing 210044, Peoples R China
推荐引用方式
GB/T 7714
Zhao, Zhong-kuo,Zhang, Qi-lin. Influence of channel tortuosity on the lightning return stroke electromagnetic field in the time domain[J]. ATMOSPHERIC RESEARCH,2009,91(2-4):404-409.
APA Zhao, Zhong-kuo,&Zhang, Qi-lin.(2009).Influence of channel tortuosity on the lightning return stroke electromagnetic field in the time domain.ATMOSPHERIC RESEARCH,91(2-4),404-409.
MLA Zhao, Zhong-kuo,et al."Influence of channel tortuosity on the lightning return stroke electromagnetic field in the time domain".ATMOSPHERIC RESEARCH 91.2-4(2009):404-409.

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来源:寒区旱区环境与工程研究所

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